John Harrison writes: "For Halloween I set up a video game in my driveway. But not just any video game. This one features laser pointers as the only input device. The idea is to use the laser to shoot vampire marshmallows before they reach the bottom of the screen. While the game itself is simple the setup that makes it run (projector, iSight, PyGame) is something that would be of interest to/. readers, so I've posted details including video of the behind the scenes set-up and the game in action."Link to Original Source